is a standardized set of extensions that adds desktop-class features to Android. While not part of the core 3.1 spec, many high-end Android devices support it to provide: Android Developers OpenGL ES | Views - Android Developers 18 Jun 2024 —
All shaders must start with:
To explicitly require OpenGL ES 3.1 in your Android app, add the following to your AndroidManifest.xml : opengl es 31 android top
In previous versions, you linked a Vertex Shader and a Fragment Shader into a single "Program." You had to link the whole program even if you only changed the fragment logic.
Supported by Android 2.2 and higher, 2.0 is suitable for basic 2D/3D graphics. is a standardized set of extensions that adds
The biggest addition to 3.1 is . Unlike vertex or fragment shaders, compute shaders allow the GPU to perform general-purpose computing tasks (GPGPU). This means developers can use the GPU for advanced physics, simulation, and complex image processing, freeing up the CPU for game logic. 2. Shader Storage Buffer Objects (SSBOs)
[ Vertex Data ] ---> [ Vertex Shader ] ---> [ Tesselation (Optional) ] | [ Fragment Shader ] <-- [ Rasterization ] <-- [ Geometry Processing ] | [ Framebuffer / Screen ] The Compute Pipeline The biggest addition to 3
| Area | Advice | |------|--------| | | Use work group sizes that match GPU warp/wavefront (e.g., 64/128/256 total invocations). | | Memory barriers | After compute shader writes, use glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT | GL_TEXTURE_FETCH_BARRIER_BIT) . | | Driver issues | Some Adreno/Mali drivers have bugs with SSBO alignment. Use std430 layout and test across devices. | | Fallback plan | Always provide an ES 3.0 or ES 2.0 path. | | Debugging | Use GLES31.glGetError() extensively; Android GPU Inspector (AGI) or RenderDoc for advanced debugging. |
: This feature allows the GPU to generate its own draw commands, reducing the communication overhead between the CPU and GPU, which is critical for performance in complex scenes. Enhanced Texturing
For "top" performance in ES 3.1, standard Java GLSurfaceView is often insufficient due to garbage collection overhead.
Traditionally, the CPU must issue a draw call for every object rendered on screen. If you have thousands of objects, the CPU becomes a bottleneck. Indirect Draw allows the GPU to generate and execute its own draw commands.